You can export a minimal, separate CSS file for each page, containing only the style rules necessary to display that particular page.

Export Minimal CSS In Site Settings
By default, this option is disabled, and you can enable it in the SEO Tab of the Site Settings. So now, you have two options: one common CSS file for all pages or separate CSS files for each page. Each CSS file is about 10 times more compact.
Please note that it improves page loading score, which may be important for Google SEO.

Overall Performance Improvements
The export of minimal CSS results in overall performance improvements, which enables sites to enter the green zone in the Performance Tests. It should considerably enhance the SEO outcome.
